Shenzhen Kerong Smart Technology KENRONE is a professional manufacturer engaged in the research, development, production, sales, and service of smart electronic products such as smart padlocks, smart cabinet locks and key boxes. Over the years, KENRONE has been focusing on product development as well as personnel training to ensure high quality sales and after-sales service. And we support OEM&ODM customization. https://www.callupcontact.com/b/businessprofile/Shenzhen_Kerong_Smart_Technology/8819252